Alexander George Gibson [commonly known as Alexander Gibson; also known as Alec Gibson, and as A. G. Gibson] was born in Northampton, England, on 23 August 1906. He studied architecture at the Royal Academy Schools in London. from where he graduated with a A.A. Hons. Dip. in 1931. He was a RIBA Howard Colls Student in 1927 and a RIBA Recognised Schools Bronze Madallist in 1929.
In 1948 he joined the London-based multidisciplinary design studio Design Research Unit (DRU) with whom he designed the Regatta Restaurant for the Festival of Britain in 1951. This was the most important job that had been carried out by the DRU at that time. Gibson also worked with the War Office and the London County Council's chief engineer in the construction of a Bailey bridge across the Thames for the Festival Britain.
Among other projects by Gibson were a number of exhibition stands, shops, showrooms and offices, including the Air India booking office in New Bond Street, London; interiors of the Peter Robinson store in the Strand, London; post offices in South Molton Street, Knightsbridge and Ludgate Circus, London; the Co-operative Insurance Society building in Manchester; and special areas in the new B.P. building in the City of London.
During the 1950s, Gibson was consulting architect to W & A. Gilbey's premises in Harlow and Dublin. In addition to being a partner in the DRU, he was also a partner in the consultancy Black Bayes & Gibson.
Gibson was elected an Associate of the Royal Institute of British Architects (ARIBA) in 1933 and later a Fellow of the Royal Institute of British Architects (FRIBA). His address was given as Shepherd's Cottage, Jordans, Beaconsfield, Buckinghamshire in 1939. He died in 1977.